Recently Added Questions
Q: Who invented waterproof fabrics ? 273 05b5cc777e4d2b419777500ca
- 1James DewarfalseCorrectIncorrect
- 2Charles GoodyearfalseCorrectIncorrect
- 3Mary MoorefalseCorrectIncorrect
- 4Charles MacintoshtrueCorrectIncorrect
Answer : 4. "Charles Macintosh"
Answer: D) Charles Macintosh Explanation: Charles Macintosh (29 December 1766 – 25 July 1843) was a Scottish chemist and inventor of waterproof fabrics.He devoted all his spare time to science, particularly chemistry, and before he was twenty resigned his clerkship to take up the manufacture of chemicals. In this he was highly successful, inventing various new processes. His experiments with one of the by-products of tar, naphtha, led to his invention of waterproof fabrics.
Q: Who is known as inventor of World Wide Standard Time ? 256 05b5cc771e4d2b4197774ffbc
- 1Sandford FlemingtrueCorrectIncorrect
- 4James BrootfalseCorrectIncorrect
Answer : 1. "Sandford Fleming"
Answer: A) Sandford Fleming Explanation: Sir Sandford Fleming, (January 7, 1827 – July 22, 1915) was a Scottish Canadian engineer and inventor. Born and raised in Scotland, he emigrated to colonial Canada at the age of 18. He proposed worldwide standard time zones, designed Canada's first postage stamp.
Q: The first effective vaccine against polio was prepared by ? 242 05b5cc723e4d2b4197774f681
- 1Robert EdwardsfalseCorrectIncorrect
- 2James SimpsonfalseCorrectIncorrect
- 3H GibbonfalseCorrectIncorrect
- 4Jonas E SalktrueCorrectIncorrect
Answer : 4. "Jonas E Salk"
Answer: D) Jonas E Salk Explanation:
Q: App to locate board exam centre for students launched by ? 311 05b5cc720e4d2b4197774f5f9
Answer : 1. "CBSE"
Answer: A) CBSE Explanation:
Q: Who invented Dynamite? 236 05b5cc6bbe4d2b4197774d834
- 1Graham BellfalseCorrectIncorrect
- 2Nikola TeslafalseCorrectIncorrect
- 3Alfred NobeltrueCorrectIncorrect
- 4Louis PateurfalseCorrectIncorrect
Answer : 3. "Alfred Nobel"
Answer: C) Alfred Nobel Explanation: Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing Dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.
Q: When was Barb Wire patented 200 05b5cc6bae4d2b4197774d7b7
Answer : 3. "1874"
Answer: C) 1874 Explanation: Joseph F. Glidden - Father of Barbed Wire. Glidden was born in New York in 1812. He invented Barbed Wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won received a patent for the modern invention in 1874 after he made his own modifications to previous versions.